High surf advisory covers most Hawaiian north, west shores

The National Weather Service in Honolulu has issued a high surf advisory for north and west shores of Niihau, Kauai, Oahu and Molokai, and for the north shores of Maui, through 4 a.m. Friday.

Large waves between 20 to 24 feet are expected on the north shores and 10 to 14 feet in height on west shores, forecasters said.

But forecasters caution a moderate northwest swell could remain, meaning the high surf advisory may be extended through late morning.

North and west-facing shore surf should significantly drop by Friday afternoon and evening, forecasters say.

“Strong breaking waves and strong currents will make swimming dangerous,” the advisory warns.